Whiffletree-hook.



J. M. TAPPAN.

WHIFFLETREE HOOK.

APPLICATION FILED JAN. 11, 1909.

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WHIFFLETREE HOOK.

APPLICATION FILED JAN. 11, 1909.

948,354. Patented Feb. 8, 1910.

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UNITED STATES PATENT OFFICE.

JAIROS M. TAPPAN, OF LUTHER, MICHIGAN.

WI-IIFFLETR-EE-HOOK.

T all whom it may concern:

Be it known that I, J AIROS M. TAPPAN, a citizen of the United States,residing at Luther, in the county of Lake and State of Michigan, haveinvented certain new and useful Improvements in lVhittletree-I-Iooks, ofwhich the following is a specification.

This invention relates to harness and has special reference to thatclass of devices which are known as whitlletree hooks.

An object of the invention is to provide a hook which can readily bedetached and which will hold securely in position when in use and whichwill not become unfastened upon the subject-ion of the same to jars orheavy pressure.

The invention has for another object the provision of a device of thischaracter which is of simple construction, which comprises but few partsand one which is applicable to any part of a harness where a device ofthis nature is employed.

The invention has for a further object the provision of a device of thischaracter which possesses the above enumerated advantages and which,owing to its simplicity of construction, can be economicallymanufactured.

Other objects and advantages will be apparent from the followingdescription and it will be understood that changes in the specificstructure shown and described may be made within the scope of the claimswithout departing from the spirit of the invention.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is a side elevation of the device as applied to a whiftletree,Fig. 2 is an edge elevation of the device, Fig. 3 is a longitudinalsection through the device, Fig. 1 is a plan view, the upper casesection being removed.

Referring to the drawings, and 11 designate the outer case sections ofthe device and are provided at their outer extremities with laterallyformed hooks 12 which lie in parallel and which are secured together inany suitable manner as by means of the rivet 13. Immediately adjoiningthe hooks 12, the case sections 10 and 11 are recessed to form acylindrical boxing 14 through which is laterally positioned a pintle 15.The pin tle 15 carries a disk 16 which is revolubly mounted upon thesame between the two case sections 10 and 11 and is so positionedSpecification of Letters Patent.

Application filed January 11, 1909.

Patented Feb. 8, 1910.

Serial No. 471,662.

as to admit of the extending of the edge of the disk 16 outwardly of theboxing 14 in juxtaposition with the inner beveled edges of the hooks 12.The disk 16 is provided in its periphery with a recess 17 for thereception of a ring 18 carried by a trace 19. The disk 16 is positionedin such relation to the beveled edges of the hooks 12 as to admit of thepassage of the ring 18 from the same only when the ring is engaged inthe recess 17 which is of sufficient size to admitof the positioning ofthe ring therein. For the purpose of frictionally holding the disk 16 inthe desired position, a sliding bolt 20 is employed which is provided atits forward extremity with a beveled edge for engagement in notches 21formed in the periphery of the disk 16 at predetermined intervals forthe purpose of holding the portion of the disk 16 in which is formed therecess 17 in a position to lock the ring 18 in engagement with the hooks12. The sliding bolt 20 is mounted in a tubing 22 which is provided witha longitudinally formed groove in one side thereof in which is engaged alip 23 carried by the bolt 20 for the purpose of preventing the rotationof the bolt 20 dur ing the movement thereof when the disk 16 isactuated. A spring 24: is positioned in the rear extremity of the tubing22 and is engaged against the rear end of the bolt 20 to serve thepurpose of forcing the same against the periphery of the disk 16. Thetubing 22 is countersunk in the sides of the case sections 10 and 11 andis held from rotative movement therebetween by means of a projection 25formed upon one side of the tubing and extended into a recessed portionformed in one of the case sections 10 and 11. The opposite extremitiesof the case sections 10 and 11 are cut away as at 26 to form a bar 27for the purpose of securing a strap 28 or the like therethrough.

In operation, the disk 16 is so rotated as to bring the recess 17 at theinner end of the hooks 12 when the ring 18 is positioned through therecess 17 and carried into the outer end of the hook by the rotativemovement of the disk 16. Then the ring 18 is engaged in the outer end ofthe hook 12, the disk 16 is so turned as to carry the recess 17 awayfrom the ring and to thereby cause the ring 18 to be locked in the hook.The engagement of the slidingbolt 20 in the notches 21 formed in theperi hery of the disk 16 serves to hold the disk rigidly at the variousangles in which it is positioned.

The bolt-inclosing tube 22, in which the disk-engaging bolt hasreciprocatory movement, will securely hold said bolt between the casesections against any possible rotation, and as the lip 28 is engaged inthe slot in said casing, the engagement of the V- shaped outer extremityof the bolt with the notches in the periphery of the disk is insured.The ositive operation of the several cooperatively associated elementswill thus hold the trace ring in the end of the hook against anypossibility of accidental disengagement.

\Vhat is claimed is 1. A device of the class described comprising twosections, a hook formed upon the outer extremities of said sections, theend of said hook being spaced from said sections to provide aring-receiving channel, a boxing formed intermediately of said sectionsadjacent to said hook, a disk rotatably disposed in said boxing, saiddisk having a radial recess formed in the periphery thereof, a pluralityof V-shaped notches formed in the periphery of said disk, areciprocatory bolt mounted between said sections and having a V-shapedextremity for engagement in said notches, and a spring disposed betweensaid sections and engaging against the inner extremity of said bolt tonormally retain the same in frictional engagement with said disk.

2. A device of the class described comprising two sections, a hookformed upon 3 the outer extremities of said sections and having its endsspaced from said sections to provide a channel, the forward end of saidchannel being longitudinally extended, a boxing formed interinediatelyof said sections adjacent said hook, a disk rotatably disposed in saidboxing, said disk having a radial recess formed in the peripherythereof, a tube mounted between said sections, a longitudinal slotformed therein, a reciprocatory bolt disposed in said tubing, and havinga lip integrally formed therewith and disposed in said slot, the outerend of said bolt being disposed in frictional engagement with theperiphery of said disk, and a spring disposed between the innerextremity of said bolt and the rear of said boxing and adapted to retainthe bolt in frictional engagement with the periphery of said disk.

In testimony whereof I affix my signature,

in presence of two witnesses.

J AIROS M. TAPPAN. Witnesses RALPH M. SMITH, Gno. HASTINGS.

